Games like Jissen! Mahjong Shinan

If you finished Jissen! Mahjong Shinan, the closest matches are U-jin: Janjuu Gakuen 2, Super Nichibutsu Mahjong 2: Zenkoku Seiha-hen, Super Mahjong 2: Honkaku 4-nin Uchi, Super Nichibutsu Mahjong 4: Kiso Kenkyu-hen and Mahjong Hanjouki. All 8 share its quiz/trivia genre and are ranked by how closely their themes and modes overlap.